Size controlled synthesis of germanium nanocrystals: effect of Ge precursor and hydride reducing agent

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dc.contributor.author Carolan, Darragh
dc.contributor.author Doyle, Hugh
dc.date.accessioned 2016-04-15T10:32:01Z
dc.date.available 2016-04-15T10:32:01Z
dc.date.issued 2015-05-02
dc.identifier.citation CAROLAN, D. & DOYLE, H. 2015. Size controlled synthesis of germanium nanocrystals: effect of Ge precursor and hydride reducing agent. Journal of Nanomaterials, 2015. doi:10.1155/2015/506056 en
dc.identifier.startpage 1 en
dc.identifier.endpage 9 en
dc.identifier.uri http://hdl.handle.net/10468/2454
dc.identifier.doi 10.1155/2015/506056
dc.description.abstract Germanium nanocrystals (Ge NCs) have attracted increasing attention as a promising alternative to II-VI and IV-VI semiconductor materials as they are cheap, “green,” electrochemically stable, and compatible with existing CMOS processing methods. Germanium is a particularly attractive material for optoelectronic applications as it combines a narrow band gap with high carrier mobilities and a large exciton Bohr radius. Solution-phase synthesis and characterisation of size monodisperse alkyl-terminated Ge NCs are demonstrated. Ge NCs were synthesised under inert atmospheric conditions via the reduction of Ge halide salts (GeX4) by hydride reducing agents within inverse micelles. Regulation of NC size is achieved by variation of germanium precursor and the strength of hydride reducing agents used. UV-Visible absorbance and photoluminescence spectroscopy showed strong significant quantum confinement effects, with moderate absorption in the UV spectral range, and strong emission in the violet with a marked dependence on excitation wavelength. en
dc.description.sponsorship Higher Education Authority (PRTLI programs Cycle 3 “Nanoscience” and Cycle 4 “INSPIRE”) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Hindawi Publishing Corporation en
dc.relation.uri http://www.hindawi.com/journals/jnm/2015/506056/
dc.rights Copyright © 2015 Darragh Carolan and Hugh Doyle. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. en
dc.rights.uri http://creativecommons.org/licenses/by/3.0/ en
dc.subject Energy gap en
dc.subject Germanium en
dc.subject Hydrides en
dc.subject Photoluminescence spectroscopy en
dc.subject Semiconductor materials en
dc.subject Synthesis en
dc.subject Atmospheric conditions en
dc.subject Excitation wavelength en
dc.subject Germanium nanocrystals en
dc.subject High carrier mobility en
dc.subject Optoelectronic applications en
dc.subject Quantum confinement effects en
dc.subject Size controlled synthesis en
dc.subject Solution phase synthesis en
dc.title Size controlled synthesis of germanium nanocrystals: effect of Ge precursor and hydride reducing agent en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Hugh Doyle, Micro-Nanoelectronics Centre, Tyndall National Institute, Cork, Ireland. +353-21-234-6722 Email: hugh.doyle@tyndall.ie en
dc.internal.availability Full text available en
dc.description.version Published Version en
dc.internal.rssid 343806519
dc.contributor.funder Higher Education Authority en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Nanomaterials en
dc.internal.copyrightchecked !!CORA!! Open Access en
dc.internal.IRISemailaddress hugh.doyle@tyndall.ie


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Copyright © 2015 Darragh Carolan and Hugh Doyle. This is an open access article distributed under the  Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Except where otherwise noted, this item's license is described as Copyright © 2015 Darragh Carolan and Hugh Doyle. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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